Most couples who get married or decide to live together generally plan to have children. Several years ago, having big families was common and this was seen as an advantage. This was mainly because children began working at an early age to help provide for the family. But with the changing times and with the cost of living getting higher every single year, having a big family is no longer considered to be a practical option. In fact, more couples are now considering having only one child and some do not have any desire to become parents at all.